Computer Science - Networking - Discussion

1. 

In a synchronous modem, the receive equalizer is known as

[A]. adaptive equalizer
[B]. impairment equalizer
[C]. statistical equalizer
[D]. compromise equalizer
[E]. None of the above

Answer: Option A

Explanation:

No answer description available for this question.

Vana.Tatarao said: (Feb 5, 2015)  
Synchronous, 4800 bps modem that uses 8-DPSK.

Each symbol is a tri-bit and duration of each symbol is 0.625 ms.

4-phase idle code: Sequences through four of the eight possible shifts allows receiver to recover carrier and clock timing information rapidly.

4-phase test word: Allows adaptive equalizer in the receive modem to adjust to its final settings.

8-phase initialization period: Prepares the descrambler circuits for 8-phase operation.

The entire training sequence requires 48.75 ms (=78*?).

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